| In millions, except per share items | Dec-31-20 | Sep-30-20 | Jun-30-20 | Jun-05-20 | Mar-31-20 | Mar-05-20 | Dec-31-19 | Sep-30-19 |
| | 10-K | 10-Q | 10-Q | 8-K | 10-Q | 8-K | 10-K | 10-Q |
| Net income | 37.1 | 25.1 | 13.8 | 0.0 | 11.9 | 0.0 | 24.5 | 14.5 |
| Depreciation and amortization | 3.8 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| Stock-based compensation | 2.1 | 2.0 | 1.7 | 1.7 | 1.3 | 1.3 | 1.5 | 1.5 |
| Deferred taxes | -1.2 | -0.6 | -0.3 | -0.3 | 0.6 | 0.6 | 0.2 | 0.5 |
| Change in working capital [+] | -14.0 | -7.3 | -7.4 | -12.4 | -1.4 | 4.0 | -3.5 | 9.2 |
| Accounts receivable | -16.8 | -32.6 | -5.4 | -5.4 | -16.3 | -16.3 | 20.3 | 6.5 |
| Other current assets | -5.0 | -5.3 | 5.0 | | -5.4 | | 0.0 | -0.4 |
| Accounts payable | 2.7 | 3.8 | -12.2 | -12.2 | 24.4 | 24.4 | -21.1 | 1.1 |
| Accrued expenses | 7.5 | 25.7 | 6.7 | | -4.8 | -4.8 | 0.2 | 3.0 |
| Other | -2.4 | 1.0 | -1.5 | 5.2 | 0.7 | 0.7 | -2.9 | -1.0 |
| Other operating activities | -18.1 | 0.9 | 1.4 | 20.2 | 1.0 | 7.5 | -12.9 | 1.7 |
| Cash from operations | 9.6 | 23.6 | 12.7 | 12.7 | 16.9 | 16.9 | 13.3 | 30.9 |
| |
| Capital expenditures [+] | -2.3 | -2.5 | -3.8 | -1.5 | -3.3 | -3.3 | -2.8 | -2.7 |
| Purchases of property and equipment | -0.4 | -0.4 | -1.5 | -1.5 | -1.1 | -1.1 | -0.8 | -0.7 |
| Capitalized product costs | -1.9 | -2.1 | -2.3 | | -2.2 | -2.2 | -2.0 | -2.1 |
| Other cash from investing | | | | -2.3 | | | | |
| Cash from investing | -2.3 | -2.5 | -3.8 | -3.8 | -3.3 | -3.3 | -2.8 | -2.7 |
| |
| Cash dividends paid | -6.1 | -6.1 | -6.1 | -6.1 | -6.1 | -6.1 | -5.4 | -5.4 |
| Repurchase of common stock, net | | | | | -3.9 | -3.9 | | |
| Option exercises | | | | | 1.5 | | | |
| Other cash from financing | 0.0 | -0.1 | -0.1 | -0.1 | 1.2 | -0.4 | -0.1 | 0.0 |
| Cash from financing | -6.1 | -6.2 | -6.1 | -6.1 | -10.4 | -10.4 | -5.5 | -5.5 |
| |
| Free cash flow | 9.2 | 23.2 | 11.2 | 11.2 | 15.8 | 15.8 | 12.6 | 30.3 |
| Per share (diluted) | $0.11 | $0.32 | $0.13 | $0.17 | $0.20 | $0.20 | $0.16 | $0.42 |
| |
| Cash paid for income taxes | 6.8 | 7.7 | 0.8 | | 4.4 | 4.4 | 3.8 | 5.4 |